sedimentary

Sandstone

Arenite

Hardness: 6-7 (Mohs scale); Color: Tan, brown, pinkish-orange; Luster: Dull or earthy; Texture: Clastic/gritty like sandpaper; Specific gravity: 2.2-2.8

Hardness: 6-7 (Mohs scale)
Color: Tan, brown, pinkish-orange
Luster: Dull or earthy

Identified July 14, 2026More sedimentary →

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Physical properties

Hardness: 6-7 (Mohs scale); Color: Tan, brown, pinkish-orange; Luster: Dull or earthy; Texture: Clastic/gritty like sandpaper; Specific gravity: 2.2-2.8

Formation & geological history

Formed through the accumulation and cementation of sand-sized mineral particles or rock fragments, typically within riverbeds, beaches, or desert environments over millions of years.

Uses & applications

Extensively used in construction as a building stone, for decorative landscaping, and as a source of silica for glass manufacturing.

Geological facts

Sandstone is often porous enough to act as a significant aquifer, storing groundwater that provides water for millions; it also serves as a major reservoir for petroleum and natural gas.

Field identification & locations

Identify by its gritty texture and visible sand grains. It is extremely common globally, frequently found in cliff faces and riverbeds. Collectors value specimens with unique weathering patterns or fossil remnants.